Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Textbook Question
Chapter 8.2, Problem 2aT
Galvanometer
Obtain a device like the one shown below.It contains a coil made of many loops of wire and a magnet suspended so that it is free to swing. A pointer has been attached to the magnet so that a small swing of the magnet will result in a large deflection of the pointer. When there is no current through the coil, the magnet is horizontal and the pointer is vertical.
Predict the deflection of the pointer (if any) when the switch is closed. Explain the reasoning you used to make your prediction.
Connect the circuit and observe the deflection of the pointer. If your observation is in conflict with your prediction, discuss your reasoning with a tutorial instructor.
The device above is called a galvanometer and can be used to detect current. If the scale on the galvanometer has been calibrated to measure amperes, the device is called an ammeter.
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Chapter 8 Solutions
Tutorials in Introductory Physics
Ch. 8.1 - A copper wire loop is placed in a uniform magnetic...Ch. 8.1 - Suppose that the loop is now placed in the...Ch. 8.1 - In each of the diagram below, the position of a...Ch. 8.1 - D. State whether you agree or disagree with each...Ch. 8.1 - The diagram at right shows a stationary, copper...Ch. 8.1 - To understand the interaction between the wire...Ch. 8.1 - A wire loop moves from a region with no magnetic...Ch. 8.1 - At two later instants, t=t1andt=t1+t the loop is...Ch. 8.2 - The resistance of loop 2 is greater than that loop...Ch. 8.2 - Suppose that loop 2 were replaced by a wooden...
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- Integrated Concepts A lightning bolt produces a rapidly varying magnetic field. It the belt strikes the earth vertically and acts like a current in a long straight wire, it will induce a voltage in a loop aligned like that in Figure 23.57 (b). What voltage is induced in a 1.00 m diameter loop 50.0 m from a 2.00106A lightning strike, if the current falls to zero in 25.0s ? (b) Discuss circumstances under which such a voltage would produce noticeable consequences.arrow_forwardWhen a magnet is thrust into a coil as in Figure 23.4(a), what is the direction of the louse exerted by the coil on the magnet? Draw a diagram showing the direction of the current induced in the coil and the magnetic field it produces, to justify your response. How does the magnitude of the force depend on the resistance of the galvanometer?arrow_forwardFigure 22.57 shows a long straight wire near a rectangular current loop. What is the direction and magnitude of the total force on the loop?arrow_forward
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